id:A009379 - OEIS Search Results

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Expansion of ln(1+tan(x).x).

+0
2

0, 2, -4, 96, -2080, 125440, -8629248, 996007936, -140162633728, 27058965184512, -6350990843576320, 1866805063173799936, -653569786506324738048, 273136898848234632380416, -133034893921204302732328960 (list; graph; listen)

	OFFSET	`0,2`
	MATHEMATICA	`Log[ 1+Tan[ x ]x ] ( Even Part *)`
	CROSSREFS	`Sequence in context: A018410 A156496 A007534 this_sequence A092918 A018428 A128773` `Adjacent sequences: A009376 A009377 A009378 this_sequence A009380 A009381 A009382`
	KEYWORD	`sign`
	AUTHOR	`R. H. Hardin (rhhardin(AT)att.net)`
	EXTENSIONS	`Extended with signs Mar 15 1997 by Olivier Gerard.`

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Last modified December 20 00:58 EST 2009. Contains 171054 sequences.

AT&T Labs Research